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Which one of the following does not exhibit the phenomenon of mutarotation?

1. (a) (+) – Sucrose
2. (b) (+) – Lactose
3. (c) (+) – Maltose
4. (d) (–) – Fructose

Correct answer: (a) (+) – Sucrose

Solution

Mutarotation occurs in reducing sugars due to the interconversion between alpha and beta anomers in solution. Sucrose is a non-reducing sugar and does not exhibit mutarotation.

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